<!DOCTYPE html>
<html>
<meta charset="UTF-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="../static/jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="../static/PhotoSwipe-4.1.0/dist/photoswipe.min.js"></script>
<script src="../static/PhotoSwipe-4.1.0/dist/photoswipe-ui-default.min.js"></script>
<link rel="stylesheet" href="../static/PhotoSwipe-4.1.0/dist/photoswipe.css">
<link rel="stylesheet" href="../static/PhotoSwipe-4.1.0/dist/default-skin/default-skin.css">

<head>
    <style type="text/css">
    .my-gallery {
        width: 100%;
        float: left;
    }

    .my-gallery img {
        width: 100%;
        height: auto;
    }

    .my-gallery figure {
        display: block;
        float: left;
        margin: 0 5px 5px 0;
        width: 150px;
    }

    .my-gallery figcaption {
        display: none;
    }
    </style>
</head>

<body>
    <h2>First gallery:</h2>
    <div id="onegroupid" class="my-gallery">
        <figure itemprop="associatedMedia">
            <a id="firstid" href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" data-size="1024x1024">
              <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" />
            </a>
        </figure>
        <figure itemprop="associatedMedia">
            <a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" data-size="1024x1024">
              <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" />
            </a>
        </figure>
        <figure itemprop="associatedMedia">
            <a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" data-size="1024x1024">
              <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" />
            </a>
        </figure>
        <figure itemprop="associatedMedia">
            <a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" data-size="1024x1024">
            <img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" />
            </a>
        </figure>
        <figure itemprop="associatedMedia">
            <a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" data-size="1024x1024">
              <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" />
            </a>
        </figure>
        <figure itemprop="associatedMedia">
            <a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" data-size="1024x1024">
            <img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" />
            </a>
        </figure>
    </div>
    <!-- Root element of PhotoSwipe. Must have class pswp. -->
    <div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
        <!-- Background of PhotoSwipe. 
         It's a separate element, as animating opacity is faster than rgba(). -->
        <div class="pswp__bg"></div>
        <!-- Slides wrapper with overflow:hidden. -->
        <div class="pswp__scroll-wrap">
            <!-- Container that holds slides. PhotoSwipe keeps only 3 slides in DOM to save memory. -->
            <!-- don't modify these 3 pswp__item elements, data is added later on. -->
            <div class="pswp__container">
                <div class="pswp__item"></div>
                <div class="pswp__item"></div>
                <div class="pswp__item"></div>
            </div>
            <!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
            <div class="pswp__ui pswp__ui--hidden">
                <div class="pswp__top-bar">
                    <!--  Controls are self-explanatory. Order can be changed. -->
                    <div class="pswp__counter"></div>
                    <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
                    <button class="pswp__button pswp__button--share" title="Share"></button>
                    <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
                    <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
                    <!-- Preloader demo https://codepen.io/dimsemenov/pen/yyBWoR -->
                    <!-- element will get class pswp__preloader--active when preloader is running -->
                    <div class="pswp__preloader">
                        <div class="pswp__preloader__icn">
                            <div class="pswp__preloader__cut">
                                <div class="pswp__preloader__donut"></div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
                    <div class="pswp__share-tooltip"></div>
                </div>
                <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
                </button>
                <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
                </button>
                <div class="pswp__caption">
                    <div class="pswp__caption__center"></div>
                </div>
            </div>
        </div>
    </div>
    <script>
    $(function() {
        // $('#firstid').attr("href", "https://www.baidu.com/img/bd_logo1.png");
        $("#onegroupid").find("a").each(function() {
            $(this).attr("href", "https://www.baidu.com/img/bd_logo1.png");
        });
    });
    var initPhotoSwipeFromDOM = function(gallerySelector) {
        // parse slide data (url, title, size ...) from DOM elements
        // (children of gallerySelector)
        var parseThumbnailElements = function(el) {
            var thumbElements = el.childNodes,
                numNodes = thumbElements.length,
                items = [],
                figureEl,
                linkEl,
                size,
                item;
            for (var i = 0; i < numNodes; i++) {
                figureEl = thumbElements[i]; // <figure> element
                // include only element nodes 
                if (figureEl.nodeType !== 1) {
                    continue;
                }
                linkEl = figureEl.children[0]; // <a> element
                size = linkEl.getAttribute('data-size').split('x');
                // create slide object
                item = {
                    src: linkEl.getAttribute('href'),
                    w: parseInt(size[0], 10),
                    h: parseInt(size[1], 10)
                };
                if (figureEl.children.length > 1) {
                    // <figcaption> content
                    item.title = figureEl.children[1].innerHTML;
                }
                if (linkEl.children.length > 0) {
                    // <img> thumbnail element, retrieving thumbnail url
                    item.msrc = linkEl.children[0].getAttribute('src');
                }
                item.el = figureEl; // save link to element for getThumbBoundsFn
                items.push(item);
            }
            return items;
        };

        // find nearest parent element
        var closest = function closest(el, fn) {
            return el && (fn(el) ? el : closest(el.parentNode, fn));
        };

        // triggers when user clicks on thumbnail
        var onThumbnailsClick = function(e) {
            e = e || window.event;
            e.preventDefault ? e.preventDefault() : e.returnValue = false;

            var eTarget = e.target || e.srcElement;

            // find root element of slide
            var clickedListItem = closest(eTarget, function(el) {
                return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
            });

            if (!clickedListItem) {
                return;
            }

            // find index of clicked item by looping through all child nodes
            // alternatively, you may define index via data- attribute
            var clickedGallery = clickedListItem.parentNode,
                childNodes = clickedListItem.parentNode.childNodes,
                numChildNodes = childNodes.length,
                nodeIndex = 0,
                index;

            for (var i = 0; i < numChildNodes; i++) {
                if (childNodes[i].nodeType !== 1) {
                    continue;
                }

                if (childNodes[i] === clickedListItem) {
                    index = nodeIndex;
                    break;
                }
                nodeIndex++;
            }
            if (index >= 0) {
                // open PhotoSwipe if valid index found
                openPhotoSwipe(index, clickedGallery);
            }
            return false;
        };

        // parse picture index and gallery index from URL (#&pid=1&gid=2)
        var photoswipeParseHash = function() {
            var hash = window.location.hash.substring(1),
                params = {};

            if (hash.length < 5) {
                return params;
            }

            var vars = hash.split('&');
            for (var i = 0; i < vars.length; i++) {
                if (!vars[i]) {
                    continue;
                }
                var pair = vars[i].split('=');
                if (pair.length < 2) {
                    continue;
                }
                params[pair[0]] = pair[1];
            }

            if (params.gid) {
                params.gid = parseInt(params.gid, 10);
            }

            return params;
        };

        var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
            var pswpElement = document.querySelectorAll('.pswp')[0],
                gallery,
                options,
                items;

            items = parseThumbnailElements(galleryElement);

            // define options (if needed)
            options = {

                // define gallery index (for URL)
                galleryUID: galleryElement.getAttribute('data-pswp-uid'),

                getThumbBoundsFn: function(index) {
                    // See Options -> getThumbBoundsFn section of documentation for more info
                    var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
                        pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
                        rect = thumbnail.getBoundingClientRect();

                    return { x: rect.left, y: rect.top + pageYScroll, w: rect.width };
                }

            };

            // PhotoSwipe opened from URL
            if (fromURL) {
                if (options.galleryPIDs) {
                    // parse real index when custom PIDs are used 
                    // http://photoswipe.com/documentation/faq.html#custom-pid-in-url
                    for (var j = 0; j < items.length; j++) {
                        if (items[j].pid == index) {
                            options.index = j;
                            break;
                        }
                    }
                } else {
                    // in URL indexes start from 1
                    options.index = parseInt(index, 10) - 1;
                }
            } else {
                options.index = parseInt(index, 10);
            }

            // exit if index not found
            if (isNaN(options.index)) {
                return;
            }

            if (disableAnimation) {
                options.showAnimationDuration = 0;
            }

            // Pass data to PhotoSwipe and initialize it
            gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
            gallery.init();
        };

        // loop through all gallery elements and bind events
        var galleryElements = document.querySelectorAll(gallerySelector);

        for (var i = 0, l = galleryElements.length; i < l; i++) {
            galleryElements[i].setAttribute('data-pswp-uid', i + 1);
            galleryElements[i].onclick = onThumbnailsClick;
        }

        // Parse URL and open gallery if it contains #&pid=3&gid=1
        var hashData = photoswipeParseHash();
        if (hashData.pid && hashData.gid) {
            openPhotoSwipe(hashData.pid, galleryElements[hashData.gid - 1], true, true);
        }
    };
    // execute above function
    initPhotoSwipeFromDOM('.my-gallery');
    </script>
</body>
</html>